Clutch



1,92sgo84 H. WORNER Sept. 26, 1933.

CLUTCH Filed April 7, 1950 @6% o @@lv w1 1 w. 5 M AM 25./ vrnarPatented' sept.Y 26,' 1933 *UNITEDl STATES 'PATENT ori-ics 1,92s,os4

\ CLUTCH Heinrich Wrner, Bischofsheim, Germany, as-

sig-nor, by direct and mesne assignments, to Fichte! & Sachs A. G.,Schweinfurt-on-the- Main,

Germany, and Mecano'G. m. b. H.,

Frankfort-on-the-Main, Germany 'Application April 7, 1930, serial No.442,341,

, and in Germany November 9, 1929 z claims. (ci. 19e-11o) and pressurering or flywheel disc does not reachv its highest value, and that,moreover, a nonuniform wearing 'of the above mentioned parts c Theobject of the present invention is to equalize the pressures exerted onthe pressure levers by the arrangement of a movable abutment for thepressure levers, so that the disadvantages described above are avoided.The abutment -at the same time serves to -make it possible to adjust thepressure levers against the coupling discs according to their wear.

The accompanying .drawing illustrates a constructional form of theinvention by means of a cross section in the vertical plane of symmetryof a two-disc coupling for power driven vehicles. v

Between the nywheel disc 1 of the driving motor and the two pressurerings 2. coupling discs 3 are -arranged in a known manner, which aremounted on the shaft 4- to be coupled. The pressure required forcoupling is exerted by means of a number of pressure levers 5, which aremounted on the coupling housing 6 and are actuated by a common sleeve 7,upon which a spring 8 presses.

6 the coupling may ner.

According to the present invention the pres-' surelevers 5'are notmounted directly on the housing 6, as has hitherto been customary, but

be disengaged'i'n known manthey rest by means of bearing pins 9 insockets 10 which are vformed in the pressure equalizing ring 11. Theinner surface ofthe same is spheriy cal and fits cn the convex sphericalouter surface of a ring 12 which'is provided on the projecting nose 13of the housing, and may be screwed backwards and forwards by means of ascrewthread. l

In engaging the coupling the sleeve 7 moves outwards under the pressureof the springs and thereby pulls the longer limbs of the pressure leversA5, so that the pressure levers press on the outer pressure ring 2 withtheir shorter limbs.

A load is thrown on the pressure equalizing ring 11 by the reaction onthe bearings of the pres-f sure levers 5, which ring is displaced on thebearing surface .of the ring 12 until the load is uniscrewed in towardsthe housing 6 until the presf sure levers 5 again take up their originalpositions.

What I claim is: i

1. A pressure equalizing device for clutches comprising a clutch casing,a cover plate therefor, pressure levers arranged in the. casing, apressure equalizing ring arranged exteriorly of the cover plate, bearing`pinslslidably mounted through the cover plate and'to' which thepressure levers are pivoted, sockets on the pressure equalizing ring ininitial hwhich the bearing pins rest, and a ring carried by the outersurface of the cover plate and provided with a spherical surface, overwhich surface the pressure equalizing ring is movable.

2. A pressure equalizing device as claimed in claimv 1 inwhich the ringwith a spherical surface is screwed on to the cover platcso as to beadjustable.

f HEINRICH wRNrm.

